Hoisting apparatus.



P. M. BASHAM & J. 0. DONALDSON.

HOISTING APPARATUS.

APPLICATION FILED 313.24, 190e.

Patented June 29, 1909.

3 SHEETS-SHEET 1.

INVENTR .3,

F. M. BASHAM & J. O. DONALDSON.

HOISTING APPARATUS. APPLIoATxoN FILED PEB. 24. 190s.

Patented June 29, 1909.

3 SHEETS-SHEET 2.

INVENTRQ y JZLZQMW WITNES SES.

fi y? 52407? P. M. BASHAM & J. 0. DONALDSON. HoIsTING APPARATUS.

APPLICATION FILED PEB. 24, 1908.

926,314. Patented June 29, 1909.

3 SHEETS-SHEET 3.

INVENTORA;

UNITED srArns PATENT oFF-Ion.

FRANK M. BAsIIAM AND JAMES o. DONALDSON, OF OIIUALAR, CALIFORNIA,AssIeNoRs To SOUTHERN PACIFIC MILLING COMPANY, or sAN FRAN-Cisco,CALIFORNIA, A CORPORA- TION oF CALIFORNIA.

HOISTING APPARATUS.

Patented June a9, 190e.

Application filed` February 24, 1908. Serial No. 417,242.

'To all whom a my comm.-

Be it known that we, FRANK M. BASHAM and JAMES O. DONALDSON, citizens ofthe Unied States, residing at Chualar, in the county of Monterey andState of California, have invented certain new and useful Improvementsin Hoisting Apparatus, Of which the fol-lowing is a specification.

The present invention relates to an improved hoisting apparatus for theloading and unloading of sacks of grain or other articles, it beingmainly designed for use in warehouses in connection with the raising ofsacks of grain to be stacked therein.

rIhe essential features of the invention reside in the means forautomatically disconnecting the friction disks from the driving cone ofthe power shaft the moment the lifting or haulage cable has been broughtinto position for either the securing of a sack thereto for the hoistingthereof, or for the releasing of a sack therefrom after the same hasbeen raised or elevated its required height; in the employment ofadjustable trip collars for automatically actuating the levercontrolling the longitudinal movement of the slidable drive shaft todisconnect the friction disks on the hoisting cable reaching its desiredposition; and in the utilization of longitudinally movable adjustablesleeves which carry the trip collars and regulate the movement thereoffor actuating the controlling lever, said adjusting sleeves being drivenby means of a feed shaft.

To comprehend the invention reference should be had to the accompanyingsheets of drawings, wherein* Figure 1 isa plan view of the apparatus.Fig. 2 is a side view in elevation of the mechanism contained in Fig. 1of the drawings. Fig. 3 is a rear end view of the apparatus. Fig. 4 is afront view of the apparatus, the frame thereof being broken away.

In the drawings, reference being had to Figs. 1 and 2 thereof, thenumeral 1 is used to designate any suitable form of a frame for thehoisting mechanism, o'n which is mounted, in the presentcase, a gasolenemotor engine 2. To the inner end of the power shaft 3 of the said engineis secured a cone 4:, which frictionally engages with the disks 5 5'.These disks are mounted ou a longitudinally movable drive shaft (i,which drive shaft works in bearings secured to the end portions of theframe 1. On the drive shaft 6, and within the frame 1 is secured ahoisting drum 7, and a short| distance beyond the said drum 7 there isalso secured on the drive shaft 6 a brake wheel 8. To the outer end ofthe drive shaft G is secured a sprocket wheel 9, which is connected toor with an upper sprocket wheel 10 by means of a drive chain 11. Theupper sprocket wheel 1() is secured to the outer projecting end of' afeed shaft 12, which shaft receives its motion from the drive shaft 6 bymeans of the chain 111. Above the feed shaft l2 and to each side thereofthe square or angularshaped lon 'tudinally disposed guideA rods 1314 arelicated, lthe bearing portions 15 of which are rounded to turn 4withinthe bearings 15 carried by the upper cross end ieces of the frame 1. Onthe said guide roc s 13-14 are slidably mounted respectively theexternally screw-threaded adjust-ing sleeves 16-16, which sleeves arereciprocated on the guide rods 13-14 by means of the brackets l7-17. Theupper end of each bracket lies within the grooved end portion 18 ofthe-sleeves 16-16, the lower end portion of each of the said bracketshaving a screw-threaded bore through which works the screw-threadedportion 18 of the feed shaft l2. The said adjusting sleeves 1t316 carryrespectively the internally screw-threaded trip collars 19-19, whichcollars, during the reciprocating Inovement of the said sleeves 1G-16,act against the vertically disposed lever 21, to throw the same to shiftthe position of the longitudinally movable slide drive shaft 6, so as toplace the disks 5-5 respectively into frictional. engagement with thecone 4 of' the power shaft 3.

Each of the guide rods 1314 has secured thereto a handle 21', by meansof which the said rods are rotated to turn the adjusting sleeves 16-16.As rotation is imparted to these adjusting sleeves by the turning of theguide rods13-14 to either the right or left, the tri collars 19-19 arecorresponding advance toward or from the controlling lever 21, so as'toact against the same atan earlier or later portion of the movement ofthe adjusting-sleeves itk-16, to operate the same to actuate the driveshaft 6 for automatically disconnecting the disks .ri-5' from frictionalengagement with the cone 4. The controlling lever 21 at its lower end ispivoted toa collar 22 attached to the drive shaft 6,..a.nd at its upperend it is connected, to the operating lever 22 by means of theconnecting rod 23, the said controlling lever 21 being also fnlcrumed toa fixed bracket 23 by the link 24. K

The tail extension of each trip collar 19-19 is slidable on alongitudinally disposed guide rod 24', which rod acts as a support forthe tail extension of the said trip collars and holds the same againstrotation during the turning action of the adj ustng sleeves 1(5-16 toadjust the position of the said collars relative to the controllinglever-'21, which lever, as stated, is automatically actuated by the saidtrip collars to shift the position of the drive shaft 6 to release thedisks 5 5 from frictional engagement with the cone 4, the releasing ofwhich disks' destroys the movement imparted to the said drive shaft,andthe transmission of motion from said shaft to the feed shaft 12.

To the upper end of the controlling lever fulcrumed to a stud 29projecting from one section 29 of the brake-band, the opposing section30 of which is connected to upwardly flanged extension 30 of the arm 28by the link 3l. On the outer'portion of the arm 28 is adjustably securedthe weight 32, which is sufficient to normally hold the said armdownward in order to compress or draw together the sections 29-30 of thebrake band and cause the same to place the brake-shoes 33 onto thebrake-wheel 8 to hold the same and the shaft 6 locked against movement,Fig. 3 of the drawings. As the lever 21 is thrown by the action of thelever 22 to placevthe disk 5 into frictional engagement with the cone 4,the nut 34 on the rod 25 bears onto the arm 26 of the bell crank 27, andthrows the said bell crank to raise thev weighted arm 28', causing thesame by its action to open the sections 2930 of the brake yband and torelease the brake shoes33 from engagement with the brake wheel 8; whileon the controlling lever 21 being .thrown by the operating lever 22 toplace the disk 5 lnto frictional engagement with the drive cone 4 on thepower' shaft 3, the nut 35 on the rod 252 acts against the lower arm 26of the bell crank 27 to raise the weighted arm 28 in order to forceapart the sections 29-30 of the band-brake to release the brake-wheel 8.The moment either disk 5 and 5 is moved out of frictional engaffementwith the cone 4 of the power shaft 3,

by the action of the controlling lever 21` eaasia ward the controllinglever 21 to carry its trip collar 19 against the said lever to actuatethe same to move the slidable drive shaft 6 so as to disengav'e the disk5 from the cone 4, the adjusting sleeve 16 is movedl away from the saidcontrolling lever 21; while'as the adjusting sleeve 16 approaches thecontrolling lever 21 to actuate the same to move the drive shaft G todisengage the disk 5 from the cone 4, the adjusting sleeve 16 is movedawayfromthe said lever 21.

' These adjusting sleeves are moved inwardly and outwardly by therotationof the feed shaft 12, the direction of its rotation 'beingcontrolled in accordance as to whichof the disks 5-5 is in frictionalengagement with the cone 4.

Havin thus Ydescribed the invention, what is claimed as new and desiredtobe protected by Letters Patent isf- 1. In an apparatus of thedescribed char-l acter, the combination with `the feed shaftv thereof, aslidable drive shaft, means for imparting rotation to the drive shaft,connection between the drive shaft andthe feed f shaft, oflongitudinally movable adjusting sleeves actuated by the feed shaft, acontrolling lever for the drive shaft, hand operated devices forthrowing the said lever to place the drive shaft into engagement withits drive mechanism, trip collars carried by the adjusting sleeves, saidcollars acting to automatically throw the controlling lever todisconnect the drive shaft from its operating mechanism, and means foractuating the adjusting sleeves to vary the position of the trip collarsrelatively thereto.

2. In an. apparatus of the described character, the combination with thecontrolling lever, of reciprocating adjusting sleeves, means forimparting reciprocating motion thereto during the working of the aparatus, trip collars carried byy the said Aa justing sleeves for actingagainst the controlling len ver for the described purpose, and devicesfor actuating the adjusting sleeves to vary the position of the tripcollars relatively thereto.

3. In an apparatus for the described purpose, the combination with thecontrolling lever thereof, of longitudinally movable adjusting sleeves,trip collars carried thereby for automatically throwing the controllinglever for the described purpose, a feed shaft for impartingreciprocating motion to the adjusting sleeves, means for actuating thesaid adjusting sleeves to regulate the position of the trip collarsrelatively thereto, brake mechanism for holding the drive shaft oftheapparatus against movement, and connections between the said brakemechanism and the controlling lever for throwing the same into and outof action with the movement of the said lever.

4. In an apparatus of the described character, the combination with thedrive shaft, of mechanism 4for imparting rotation thereto, a controllinglever for shifting Ythe drive shaft, hand actuated devices for throwingthe said controlling lever to connect the drive shaft `with itsmechanism for imparting rotation thereto, a drum on the drive shaft,adjustable trip Vcollars, for operating the controlling lever todisconnect the drive shaft from itsoperating mechanism, means foractuating the trip collars from the drive shaft, and devices foradjusting the position of said collars relative to the controllinglever.

5. In an apparatus of the described character, the combination with aslidable drive shaft, of mechanism for imparting rotation thereto, acontrolling lever for said shaft, hand actuated devices for throwingsaid lever to connect the drive shaft with the mechanism for impartingrotation thereto, a drum secured to the drive shaft, and adjustablemeans for automatically operating the controlling lever todisconnect'the drive shaft from its rotating mechanism.

In testimony whereof we have signed our names to this specification inthe presence of two subscribing witnesses.

FRANK M. BASHAM. JAMES O. DONALDSON. Vitnesses:

GEORGE P. BECK, C. W. LENANDER.

